Index: index.html
===================================================================
--- index.html	(revision 5164)
+++ index.html	(revision 5165)
@@ -9,8 +9,8 @@
 <h2> Table of Contents </h2>
 <p>
 <ul class="toc">
-	<li> <a href="01_intro/">   1. Introduction
-	<li> <a href="02_model/">   2. Model of the world
+	<li> <a href="01_intro/index.html">   1. Introduction
+	<li> <a href="02_model/index.html">   2. Model of the world
 	<li> <a href="03_data/">    3. Where data is stored
 	<li> <a href="04_ui/">      4. User interface
 	<li> <a href="05_invoc/">   5. Program invocation